Catch Liquid template exceptions, and write out their details. Prevents silent fail of template parsing

lib/jekyll/convertible.rb

@@ -63,7 +63,13 @@ module Jekyll
       # render and transform content (this becomes the final content of the object)
       payload["pygments_prefix"] = converter.pygments_prefix
       payload["pygments_suffix"] = converter.pygments_suffix
-      self.content = Liquid::Template.parse(self.content).render(payload, info)
+      
+      begin
+        self.content = Liquid::Template.parse(self.content).render(payload, info)
+      rescue => e
+        puts "Liquid Exception: #{e.message} in #{self.data["layout"]}"
+      end
+      
       self.transform
 
       # output keeps track of what will finally be written
@@ -73,7 +79,12 @@ module Jekyll
       layout = layouts[self.data["layout"]]
       while layout
         payload = payload.deep_merge({"content" => self.output, "page" => layout.data})
-        self.output = Liquid::Template.parse(layout.content).render(payload, info)
+
+        begin
+          self.output = Liquid::Template.parse(layout.content).render(payload, info)
+        rescue => e
+          puts "Liquid Exception: #{e.message} in #{self.data["layout"]}"
+        end
 
         layout = layouts[layout.data["layout"]]
       end